TigerDirect offers the TRENDnet Powerline AV Ethernet Adapter Kit, model no. TPL-303E2K, for $44.99. Coupon code “OAR60076″ cuts it to $29.99. With free shipping, that’s $13 under our March mention and the lowest total price we could find now by $15. This plug-and-play Ethernet kit uses your existing electrical outlets to create a secure high speed (up to 200Mbps) building-wide network.